[INFO] fetching crate cc2538-hal 0.1.1...
[INFO] documenting cc2538-hal-0.1.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate cc2538-hal 0.1.1 into /workspace/builds/worker-118/source
[INFO] validating manifest of crates.io crate cc2538-hal 0.1.1 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-118/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-118/source/rust-toolchain
[INFO] started tweaking crates.io crate cc2538-hal 0.1.1
[INFO] finished tweaking crates.io crate cc2538-hal 0.1.1
[INFO] tweaked toml for crates.io crate cc2538-hal 0.1.1 written to /workspace/builds/worker-118/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.7.0
[INFO] [stderr]   Downloaded embedded-hal v1.0.0-alpha.5
[INFO] [stderr]   Downloaded alloc-cortex-m v0.4.2
[INFO] [stderr]   Downloaded cortex-m-rt v0.7.1
[INFO] [stderr]   Downloaded linked_list_allocator v0.8.11
[INFO] [stderr]   Downloaded circular-queue v0.2.6
[INFO] [stderr]   Downloaded cc2538-pac v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 593c487446d57dfc82da67684112cec421308e812e63c335f58fc4c36329b7ab
[INFO] running `Command { std: "docker" "start" "-a" "593c487446d57dfc82da67684112cec421308e812e63c335f58fc4c36329b7ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "593c487446d57dfc82da67684112cec421308e812e63c335f58fc4c36329b7ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "593c487446d57dfc82da67684112cec421308e812e63c335f58fc4c36329b7ab", kill_on_drop: false }`
[INFO] [stdout] 593c487446d57dfc82da67684112cec421308e812e63c335f58fc4c36329b7ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5484333d7ef854a807b24ba7d365d7ebe29fb53b39f85e422568e559e112077
[INFO] running `Command { std: "docker" "start" "-a" "b5484333d7ef854a807b24ba7d365d7ebe29fb53b39f85e422568e559e112077", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling cortex-m v0.7.4
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling cortex-m-rt v0.7.1
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling cc2538-pac v0.1.2
[INFO] [stderr]     Checking linked_list_allocator v0.8.11
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.8.11/src/lib.rs:1:41
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature = "const_mut_refs", feature(const_mut_refs))]
[INFO] [stdout]   |                                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `linked_list_allocator` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b5484333d7ef854a807b24ba7d365d7ebe29fb53b39f85e422568e559e112077", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5484333d7ef854a807b24ba7d365d7ebe29fb53b39f85e422568e559e112077", kill_on_drop: false }`
[INFO] [stdout] b5484333d7ef854a807b24ba7d365d7ebe29fb53b39f85e422568e559e112077